modernize 37→5（-32）：interface{}→any、内置 max/min、slices/maps 辅助、strings.Cut/SplitSeq、strings.Builder（修复 mail.go O(n²) 拼接）。逐 hunk 核对语义等价；omitzero 冲突修复被自动跳过（wire 格式不变）；手动清 4 处遗留 sort import + 2 处 QF1012。

Result: {"status":"keep","total_issues":74,"golint_canonicalheader":8,"golint_errname":1,"golint_errorlint":12,"golint_forcetypeassert":3,"golint_gosec":0,"golint_intrange":3,"golint_modernize":5,"golint_nilnil":3,"golint_perfsprint":18,"golint_prealloc":3,"golint_recvcheck":7,"golint_usestdlibvars":3,"golint_wastedassign":7,"golint_total":73,"eslint_problems":1,"eslint_errors":0,"eslint_warnings":1,"tsc_errors":0,"measure_s":38}

internal/apps/openflare/agent/observability.go

@@ -179,18 +179,9 @@ func buildNodeAccessLogRecords(nodeID string, direct []NodeAccessLog, buffered [
 	records := make([]*model.OpenFlareAccessLog, 0, total)
 	appendLogs := func(logs []NodeAccessLog) {
 		for _, item := range logs {
-			bytesSent := item.BytesSent
-			if bytesSent < 0 {
-				bytesSent = 0
-			}
-			requestLength := item.RequestLength
-			if requestLength < 0 {
-				requestLength = 0
-			}
-			requestTimeMs := item.RequestTimeMs
-			if requestTimeMs < 0 {
-				requestTimeMs = 0
-			}
+			bytesSent := max(item.BytesSent, 0)
+			requestLength := max(item.RequestLength, 0)
+			requestTimeMs := max(item.RequestTimeMs, 0)
 			record := &model.OpenFlareAccessLog{
 				NodeID:        nodeID,
 				LoggedAt:      timeFromUnix(item.LoggedAtUnix, reportedAt),

internal/apps/openflare/agent/waf_ip_group.go

@@ -11,6 +11,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"slices"
 	"sort"
 	"strconv"
 	"strings"
@@ -97,7 +98,7 @@ func buildAgentWAFIPGroups(ctx context.Context, ids []uint) ([]WAFIPGroup, error
 	if len(ids) == 0 {
 		return []WAFIPGroup{}, nil
 	}
-	sort.Slice(ids, func(i, j int) bool { return ids[i] < ids[j] })
+	slices.Sort(ids)
 	groups, err := repository.ListOpenFlareWAFIPGroupsByIDs(ctx, ids)
 	if err != nil {
 		return nil, err
@@ -204,7 +205,7 @@ func activeConfigWAFIPGroupIDs(ctx context.Context) ([]uint, error) {
 	for id := range idSet {
 		ids = append(ids, id)
 	}
-	sort.Slice(ids, func(i, j int) bool { return ids[i] < ids[j] })
+	slices.Sort(ids)
 	return ids, nil
 }